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Memory Protection with Base and Limit Registers

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Questions and Answers

What is the purpose of a command interpreter in an operating system?

To manage the communication network
To execute user commands (correct)
To synchronize processors' local memory
To design the high-speed buses

In a distributed system, what does the communication network design need to consider?

Kernel integration for command interpreters
User command execution
Message routing and connection strategies (correct)
Processor clock synchronization

What is the function of a shell in an operating system?

To manage the processor's local memory
To design high-speed buses
To maintain security strategies
To execute user commands (correct)

How do processors in a communication system communicate with each other?

Via message routing and connection strategies (D) Signup and view all the answers

Why are loading the base and limit registers considered privileged instructions?

To prevent access to any memory area outside the program's address space (A) Signup and view all the answers

What is the purpose of using a timer in an operating system?

To prevent a program from running too long (D) Signup and view all the answers

How is the CPU protected from a user program getting stuck in an infinite loop?

By using a timer that interrupts the CPU after a specified period (D) Signup and view all the answers

What is the purpose of ensuring that all addresses generated by a process are within a specific range?

To prevent the process from accessing memory areas outside its address space (B) Signup and view all the answers

What is the purpose of the base register in memory protection?

It holds the starting memory address of the process (C) Signup and view all the answers

Which register contains the smallest legal physical memory address for a process?

Base register (D) Signup and view all the answers

How does the CPU protect memory outside the defined range?

By checking every address generated by the process against the values in the CPU registers (B) Signup and view all the answers

What happens when a process is loaded into memory in terms of base and limit registers?

The base register is initialized with the starting address of the process and the limit register is initialized with its size (C) Signup and view all the answers

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